阶段空场与上向分层联合采矿法应用实践

摘要

为提高深部厚大破碎矿体采矿效率，进行采矿方法优化，提出了机械化盘区阶段空场与上向分层联合采矿法。盘区矿房采用分段凿岩、阶段空场嗣后充填采矿法，发挥了无轨设备的高效性能；通过对矿房上盘主断裂 F1进行长锚索预支护及顶柱锚网支护，确保作业安全。盘区矿柱采用上向分层充填采矿法，为减少上盘面暴露面积，在靠近上盘回采时，预留倒台阶上盘护顶矿柱，矿柱滞后一分层回采。实践证明，该联合采矿法不但采准工程量少，而且具有综合生产能力大和安全高效的优点。%Mining method optimization was conducted in Sanshandao gold mine to increase mining productivity, and stage open stoping and upward-layered combined mining method was proposed.The stage open stoping and upward-layered combined mining method plays very important role in increasing efficiency of trackless equipment.Cable anchor pre-support and crown pillar bolt wire mesh support were used in major fault F1 on the hanging wall to ensure the working safety.Upward-layered and fill method was used for panel pillar recovery.To minimize the exposed area,hanging wall support pillar was left for recovery at the final stage of stope panel.The practice shows that the sublevel stoping and upward cut and fill combined mining method has the advantages of small degree of development,large production capacity,high efficiency and safety.